Proposal:Extensions for building:material

Key:building:material:***=*
Proposal status:	Inactive (inactive)
Proposed by:	Lesnikus
Applies to:	,
Definition:	New class tags, specifying the appearance of materials of the facade of buildings.
Draft started:	2017-10-19
RFC start:	2017-10-20

Proposal

New class tags, specifying the appearance of materials of the facade of buildings.

Description

This will allow you to accurately characterize the appearance of any buildings. Previously, such buildings had to be marked with a not exact building:material=*, which indicated only the type of material of the facade, but not its specific appearance. This new class of tags allows you to specify what shape the material has. Use should be done together with building:material=*. I suggest adding these tags:

building:material=concrete
building:material:concrete=panel	Prefabricated reinforced concrete product, usually height of one floor, and a width equal to the room. Panels are manufactured with ready windows and doors holes.
building:material:concrete=monolith	Monolith buildings cast from concrete on the site of construction
building:material:concrete=block	Prefabricated reinforced concrete product. The block is much larger than the brick and can be 2-3 meters long and 1-1.5 meters height (width = half height). It is smaller than a concrete panel.
building:material=wood
building:material:wood=logs	Facade folded from felled tree trunk
building:material:wood=planks	Flat on both sides wooden board
building:material=glass
building:material:glass=transparent	Front covered in transparent glass
building:material:glass=mirror	Front covered in mirrored-glass
building:material=metal
building:material:metal=corrugated	Covered corrugated sheet metal
building:material:metal=plates	Front with other, metal plates (replacing metal_plates from building:material)

Rationale

Currently, the values of building:material=* indicates only the type of material, but not the specific shape of the material. You can not specify that the concrete is presented in the form of panels, not blocks; wood in the form of logs, not planks, etc.

Tagging

In the case of approval of this class of tags, the values of the building:material=* should be optimized for new conditions. Some values need to be removed from the building:material=*, recognizing their use is correct only as the value of the new class tags. For example, building:material=mirror will not be correct. "Mirror" is a refinement of the value "glass". Therefore, it is correct to specify two tags: building:material=glass + building:material:glass=mirror.

Not correct: building:material=metal_plates. Correctly: building:material=metal + building:material:metal=plates. Do not worry that the renaming will be large-scale. building:material=metal_plates was only used a little more than 100 times [1]. building:material=mirror used 477 times [2]. If you know what else you can transfer from building:material=* to new tags, tell me in discussion page.

Using

Need to add two tags to the building: building:material=*name_of_material* AND building:material:*name_of_material*=*specific_value* For example:

Keys	Short description	Example image
building:material=concrete + building:material:concrete=panel	Concrete panel building
building:material=wood + building:material:wood=logs	Log house
building:material=glass + building:material:glass=mirror	Front covered in mirrored-glass

Rendering

Useful for 3D rendering. Using this tag, you can correctly assign textures to buildings models.

Features/Pages affected

Key:building:material[[3]]

Comments

Please comment on the discussion page.